?? 3310._c
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/************************************************************/
/* 3310 Code for M32L */
/* By pasyong */
/* 2006-4 */
/* Base ICC6.31A */
/************************************************************/
#include <iom32v.h>
#include <macros.h>
#include "english_6x8_pixel.h"
#define LCD_PORT PORTC
#define LCD_DC BIT(0)
#define LCD_CE BIT(1)
#define LCD_RST BIT(2)
#define SPI_MOSI 0x20 // LCD第3腳, Mega16:PB5(MOSI) 第6腳
#define SPI_CLK 0x80 // LCD第2腳, Mega16:PB7(SCK) 第8腳
void delay_1us(void) //1us延時函數
{
asm("nop");
asm("nop");
}
void lcd_port(void)
{
DDRC|= LCD_RST | LCD_DC | LCD_CE ;
DDRB |= SPI_MOSI | SPI_CLK;
}
/*-----------------------------------------------------------------------
LCD_write_byte : 使用SPI接口寫數據到LCD
輸入參數:data :寫入的數據;
command :寫數據/命令選擇;
-----------------------------------------------------------------------*/
void LCD_write_byte(unsigned char data, unsigned char command)
{
LCD_PORT&= ~LCD_CE ; // 使能LCD
if (command == 0)
{
LCD_PORT&= ~LCD_DC ; // 傳送命令
}
else
{
LCD_PORT|= LCD_DC ; // 傳送數據
}
SPDR = data; // 傳送數據到SPI寄存器
while ((SPSR & 0x80) == 0); // 等待數據傳送完畢
LCD_PORT|= LCD_CE ; // 關閉LCD
}
/*-----------------------------------------------------------------------
LCD_set_XY : 設置LCD坐標函數
輸入參數:X :0-83
Y :0-5
-----------------------------------------------------------------------*/
void LCD_set_XY(unsigned char X, unsigned char Y)
{
LCD_write_byte(0x40 | Y, 0); // column
LCD_write_byte(0x80 | X, 0); // row
}
/*-----------------------------------------------------------------------
LCD_write_char : 顯示英文字符
輸入參數:c :顯示的字符;
-----------------------------------------------------------------------*/
void LCD_write_char(unsigned char c)
{
unsigned char line;
c -= 32;
for (line=0; line<6; line++)
LCD_write_byte(font6x8[c][line], 1);
}
/*-----------------------------------------------------------------------
LCD_write_english_String : 英文字符串顯示函數
輸入參數:*s :英文字符串指針;
X、Y : 顯示字符串的位置,x 0-83 ,y 0-5
-----------------------------------------------------------------------*/
void LCD_write_english_string(unsigned char X,unsigned char Y,char *s)
{
LCD_set_XY(X,Y);
while (*s)
{
LCD_write_char(*s);
s++;
}
}
/*-----------------------------------------------------------------------
LCD_clear : LCD清屏函數
-----------------------------------------------------------------------*/
void LCD_clear(void)
{
unsigned int i;
LCD_write_byte(0x0c, 0); //普通顯示模式
LCD_write_byte(0x80, 0); //設置RAM的X地址
for (i=0; i<504; i++)
LCD_write_byte(0, 1); //寫0數據
}
/*-----------------------------------------------------------------------
LCD_init : 3310LCD初始化
-----------------------------------------------------------------------*/
void LCD_init(void)
{
DDRC|= LCD_RST | LCD_DC | LCD_CE ;
DDRB |= SPI_MOSI | SPI_CLK;
PORTC &= ~LCD_RST; // 產生一個讓LCD復位的低電平脈沖
delay_1us();
PORTC |= LCD_RST;
delay_1us();
PORTC &= ~LCD_CE ; // 關閉LCD
delay_1us();
PORTC |= LCD_CE; // 使能LCD
delay_1us();
LCD_write_byte(0x21, 0); // 使用擴展命令設置LCD模式
LCD_write_byte(0xc8, 0); // 設置偏置電壓
LCD_write_byte(0x06, 0); // 溫度校正
LCD_write_byte(0x13, 0); // 1:48
delay_1us();
LCD_write_byte(0x20, 0); // 使用基本命令
LCD_clear(); // 清屏
LCD_write_byte(0x0c, 0); // 設定顯示模式,正常顯示
PORTC &= ~LCD_CE ; // 關閉LCD
}
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